This was the third season of excavations at the site of Grotta del Leone, Agnano (PI) undertaken by Pisa University in collaboration with the Archaeological Superintendency of Tuscany.
Work continued in the trenches opened during the previous campaign and Trench 4 was extended.

In Trench 3 (2 × 3 m), the investigation of US 2 continued, a layer containing Upper Palaeolithic material, from spit 10 to the base of spit 15.
The excavation of the small pit 8 US 12 was completed – a late Neolithic level. The pit fill was subjected to floatation in order to recover the palaeo-botanical remains. Quadrants C-D-E 18 were extended leaving a baulk of c. 20 cm. A level relating to Neolithic occupation was also investigated in this area. It contained very little material: flint and Sardinia obsidian flake lithic industry and pottery fragments (Chassey facies).

In trench 4 (2 × 3 m), the investigation of US 9, a level with material from the Upper Palaeolithic, continued. The context was dug from spit 12 down to the base of spit 17.
Trench 4 was enlarged with the excavation of rows in quadrants AA-A-B 18 and 19, where an in situ layer (US 12) underlay the surface layer US 1. A patch of ash was identified, more or less sub-circular in shape, characterised by a concentration of charcoal and the presence of a baked clay surface. This evidence may be interpreted as the remains of a combustion structure. The few materials associated with it consisted of pottery, burnt and/or calcinated bone and an arrowhead attributable to the Eneolithic period.

In trench 5 (3 × 4 m), the excavation of US 2 continued. Macro-faunal remains and Palaeolithic flaked lithic industry were recovered.